How do you get sick because of air in your house?

Grade level:  3rd- 5th grades

Skills: Addison and subtraction

Related environmental issues: Air 

Luckily, we don’t have anybody who die because of the air in your house (household air pollution) in the United States. However, many people around the world get sick and even die because of household air pollution. One out of 6 people in the world doesn’t have electrity and burns wood or coal in their house for cooking and heating instead. Breading harmful smoke from burning materials inside the house damages their health.

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1. In the Philippines, Asia, 47,676 men and 39,003 female unfortunately died because of household air pollution in 2016 alone. How many deaths did the Philippines have due to household air pollution?

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2. In the same year, 37,461 deaths occurred because of car crashes in the United States. How many more or less people died from household air pollution in the Philippines?


World Health Organization, Global Health Observatory data respiratory, Death by country

Insurance Institute for Highway Safety, State by State general statistics for 2016

Photo- Science Daily, 2012. Open-fire cooking may affect child cognitive development



Answer keys

  1. 47,676 + 39,003 = 86,679
  2. 86,679 – 37,461 = 49,218 more people

How much energy & money do LED lamps save?

Grade level: 4th – 5th grades

Skills: Multiplication

Related environmental issues: Energy conservation

The table below shows how much electricity each light bulb uses to light your room in 1 year.

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  1. Your house has 30 light fixtures.  How much electricity do you use during a year if you use a regular light bulb for each light fixture?
  2. How much electricity do you use during a year if you use an energy saving light bulb for each house’s light fixture?
  3. How much electricity can you save if you replace all of the 30 regular light bulbs with energy saving light bulbs?
  4. The average price of 1kwh-electricity in California was 21 cents in August 2018. How much money could your family save for electricity in a year if you replaced all of the 30 light bulbs with energy saving light bulbs in a year?




Answer keys

  1. 200 x 30 = 6,000 (kWh)
  2. 30 x 30 = 900 (kWh)
  3. 6,000 – 900 = 5,100 (kWh)
  4. 5,100 x 21 = 107,100 (cents) = $ 1,071